Should connector sheilds be grounded?

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skyjumper

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Should connector sheilds be grounded?

« on: April 03, 2012, 09:06:51 pm »

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Hi All...

I am using a few connector libraries, one for DB9 and one for a mini-USB connector with legs. I noticed that the EAGLE libraries don't seem to ground the vias that the thru hole parts of the connectors mount through. Is there a reason for that or is it okay to ground these vias?

Thanks...


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CrossRoads

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Re: Should connector sheilds be grounded?

« Reply #1 on: April 04, 2012, 11:37:02 am »

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Okay to ground, but only at one end. Don't want to create ground loops.


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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at www.crossroadsfencing.com/BobuinoRev17

thegeekway

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Re: Should connector sheilds be grounded?

« Reply #2 on: April 05, 2012, 07:46:17 am »

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I dont believe ground looping is a problem with connectors as they are on the same circuit. I could be wrong(most likely) but I thought ground looping was an issue with 2 different circuits sharing a common connection to ground. Where the 2 circuits should only have 1 point of contact.

I ground all shields unless the datasheet advises otherwise. It makes the solder connection much stronger(not just a single pad to tear up[I use ground planes]) but is a little harder to solder in the first place.

Phil